Electrochemical and Spectroscopic Characterization of N,NThe outstanding position of the 1,4-isomer, quinoxaline, among the diazanaphthalenes is confirmed by comparing LUMO energies from HMO perturbation calculations. Diquaternary salts [(R+),(quin)](X-),, R = Me, Et; quin quinoxaline, 2,3-and 6,?-dimethyl-and 2,3,6,?-tetramethylquinoxaline, X-= BF, or SbC1; (4a-g), were isolated and characterized as compounds which are sensitive to reduction and hydrolysis. Cyclic voltammetry of the two-step redox systems of the Weitz type showed two reversible one-electron reduc-